An electric current is passed through a straight wire, magnetic compasses are placed at the points A and B. True statement is?

Their needles will not deflect

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Only one of the needles will deflect

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Both the needles will deflect in the same direction

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The needles will deflect in the opposite direction

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Solution

The correct option is D The needles will deflect in the opposite direction
Using right hand thumb rule direction of magnetic field will be in opposite direction at A and B.

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An electric current is passed through a straight wire, magnetic compasses are placed at the points A and B. True statement is?

The correct option is D The needles will deflect in the opposite directionUsing right hand thumb rule direction of magnetic field will be in opposite direction at A and B.

The correct option is D The needles will deflect in the opposite direction
Using right hand thumb rule direction of magnetic field will be in opposite direction at A and B.